Guaranteach – online math help

Since our start in 2008, George, Alasdair and over 120 additional contributors have grown Guaranteach into one of the Internet’s best resources for teaching and learning math. With over 20,000 teacher-reviewed lessons we now cover every topic in K-12 math with multiple videos that teach each concept in a variety of different ways. And we’ve added some extra features too, like an assessment quiz that profiles a user’s learning style and recommends videos to match it, quizzes that let students practice the math they learn, and reports that track progress.
We haven’t realized our vision of helping everybody who needs help with math to get it, at least not yet. But we think we’re on our way. Maybe we can help you too?
(Link: Guaranteach – online math help)